# THERMAL EXPANSION CALCULATOR

Thermal Expansion Calculator has been developed to calculate linear thermal expansion of an unrestrained bar when the temperature of the bar is uniformly changed. Thermal expansion formulas which are used for calculations are given in the "List of Equations" section.

If the temperature of a bar , which rests freely on a surface, is increased by ∆T, the bar expands linearly by an amount of δT. The amount of elongation is proportional to the temperature change ∆T, the length of the bar L and coefficient of thermal expansion of bar material α.

##### Calculator:

 INPUT PARAMETERS Parameter Symbol Value Unit Initial Length L mm cm m inch ft Linear Expansion Coefficient α m/m°C in/in°F Initial Temperature t0 °C °F Final Temperature t1

 OUTPUT PARAMETERS Parameter Symbol Value Unit Change in Length δT --- --- Final Length L + δT --- Temperature Change ∆T --- --- Thermal Strain εT --- ---

##### Supplements:

 Link Usage Material Properties Thermal expansion coefficient values of steels, aluminum alloys, cast irons, coppers and titaniums. Thermal Stress in a Bar Calculates stress of a restrained bar when the temperature of the bar is uniformly changed. Thermal Stress in a Unifrom Plate Calculates stress of a restrained unifrom plate when the temperature of the plate is uniformly changed.

##### List of Equations:

 Parameter/Condition Symbol Equation Thermal Deformation δT δT = (∆T)αL Thermal Strain εT εT = αL